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If the resistance of a wire is 3Ω  at 200C and α=0.004/0C , then determine its resistance at 1000C 

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a
1.96Ω
b
2.96Ω
c
3.96Ω
d
5Ω

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detailed solution

Correct option is C

R2=R11+αT=31+0.00410020=31+0.004×80=3×1.32=3.96Ω

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